基于STM32的DS18B20的温度测量和OLED的显示

/************************************************************************************ * Copyright (c), 2014, HelTec Automatic Technology co.,LTD. * All rights reserved. * * Http: www.heltec.cn * Email: cn.heltec@gmail.com * WebShop: heltec.taobao.com * * File name: OLED_I2C.c * Project : HelTec.uvprij * Processor: STM32F103C8T6 * Compiler : MDK fo ARM * * Author : 小林 * Version: 1.00 * Date : 2014.4.8 * Email : hello14blog@gmail.com * Modification: none * * Description:128*64点阵的OLED显示屏驱动文件，仅适用于惠特自动化(heltec.taobao.com)的SD1306驱动IIC通信方式显示屏 * * Others: none; * * Function List: * 1. void I2C_Configuration(void) -- 配置CPU的硬件I2C * 2. void I2C_WriteByte(uint8_t addr,uint8_t data) -- 向寄存器地址写一个byte的数据 * 3. void WriteCmd(unsigned char I2C_Command) -- 写命令 * 4. void WriteDat(unsigned char I2C_Data) -- 写数据 * 5. void OLED_Init(void) -- OLED屏初始化 * 6. void OLED_SetPos(unsigned char x, unsigned char y) -- 设置起始点坐标 * 7. void OLED_Fill(unsigned char fill_Data) -- 全屏填充 * 8. void OLED_CLS(void) -- 清屏 * 9. void OLED_ON(void) -- 唤醒 * 10. void OLED_OFF(void) -- 睡眠 * 11. void OLED_ShowStr(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize) -- 显示字符串(字体大小有6*8和8*16两种) * 12. void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N) -- 显示中文(中文需要先取模，然后放到codetab.h中) * 13. void OLED_DrawBMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[]) -- BMP图片 * * History: none; * *************************************************************************************/ #include "OLED_I2C.h" #include "delay.h" #include "codetab.h" void I2C_Configuration(void) { I2C_InitTypeDef I2C_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); /*STM32F103C8T6芯片的硬件I2C: PB6 -- SCL; PB7 -- SDA */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;//I2C必须开漏输出 GPIO_Init(GPIOB, &GPIO_InitStructure); I2C_DeInit(I2C1);//使用I2C1 I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; I2C_InitStructure.I2C_OwnAddress1 = 0x30;//主机的I2C地址,随便写的 I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; I2C_InitStructure.I2C_ClockSpeed = 400000;//400K I2C_Cmd(I2C1, ENABLE); I2C_Init(I2C1, &I2C_InitStructure); } void I2C_WriteByte(uint8_t addr,uint8_t data) { while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY)); I2C_GenerateSTART(I2C1, ENABLE);//开启I2C1 while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));/*EV5,主模式*/ I2C_Send7bitAddress(I2C1, OLED_ADDRESS, I2C_Direction_Transmitter);//器件地址 -- 默认0x78 while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); I2C_SendData(I2C1, addr);//寄存器地址 while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_SendData(I2C1, data);//发送数据 while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_GenerateSTOP(I2C1, ENABLE);//关闭I2C1总线 } void WriteCmd(unsigned char I2C_Command)//写命令 { I2C_WriteByte(0x00, I2C_Command); } void WriteDat(unsigned char I2C_Data)//写数据 { I2C_WriteByte(0x40, I2C_Data); } void OLED_Init(void) { DelayMs(100); //这里的延时很重要 WriteCmd(0xAE); //display off WriteCmd(0x20); //Set Memory Addressing Mode WriteCmd(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid WriteCmd(0xb0); //Set Page Start Address for Page Addressing Mode,0-7 WriteCmd(0xc8); //Set COM Output Scan Direction WriteCmd(0x00); //---set low column address WriteCmd(0x10); //---set high column address WriteCmd(0x40); //--set start line address WriteCmd(0x81); //--set contrast control register WriteCmd(0xff); //亮度调节 0x00~0xff WriteCmd(0xa1); //--set segment re-map 0 to 127 WriteCmd(0xa6); //--set normal display WriteCmd(0xa8); //--set multiplex ratio(1 to 64) WriteCmd(0x3F); // WriteCmd(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content WriteCmd(0xd3); //-set display offset WriteCmd(0x00); //-not offset WriteCmd(0xd5); //--set display clock divide ratio/oscillator frequency WriteCmd(0xf0); //--set divide ratio WriteCmd(0xd9); //--set pre-charge period WriteCmd(0x22); // WriteCmd(0xda); //--set com pins hardware configuration WriteCmd(0x12); WriteCmd(0xdb); //--set vcomh WriteCmd(0x20); //0x20,0.77xVcc WriteCmd(0x8d); //--set DC-DC enable WriteCmd(0x14); // WriteCmd(0xaf); //--turn on oled panel } void OLED_SetPos(unsigned char x, unsigned char y) //设置起始点坐标 { WriteCmd(0xb0+y); WriteCmd(((x&0xf0)>>4)|0x10); WriteCmd((x&0x0f)|0x01); } void OLED_Fill(unsigned char fill_Data)//全屏填充 { unsigned char m,n; for(m=0;m<8;m++) { WriteCmd(0xb0+m); //page0-page1 WriteCmd(0x00); //low column start address WriteCmd(0x10); //high column start address for(n=0;n<128;n++) { WriteDat(fill_Data); } } } void OLED_CLS(void)//清屏 { OLED_Fill(0x00); } //-------------------------------------------------------------- // Prototype : void OLED_ON(void) // Calls : // Parameters : none // Description : 将OLED从休眠中唤醒 //-------------------------------------------------------------- void OLED_ON(void) { WriteCmd(0X8D); //设置电荷泵 WriteCmd(0X14); //开启电荷泵 WriteCmd(0XAF); //OLED唤醒 } //-------------------------------------------------------------- // Prototype : void OLED_OFF(void) // Calls : // Parameters : none // Description : 让OLED休眠 -- 休眠模式下,OLED功耗不到10uA //-------------------------------------------------------------- void OLED_OFF(void) { WriteCmd(0X8D); //设置电荷泵 WriteCmd(0X10); //关闭电荷泵 WriteCmd(0XAE); //OLED休眠 } //-------------------------------------------------------------- // Prototype : void OLED_ShowChar(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize) // Calls : // Parameters : x,y -- 起始点坐标(x:0~127, y:0~7); ch[] -- 要显示的字符串; TextSize -- 字符大小(1:6*8 ; 2:8*16) // Description : 显示codetab.h中的ASCII字符,有6*8和8*16可选择 //-------------------------------------------------------------- void OLED_ShowStr(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize) { unsigned char c = 0,i = 0,j = 0; switch(TextSize) { case 1: { while(ch[j] != '\0') { c = ch[j] - 32; if(x > 126) { x = 0; y++; } OLED_SetPos(x,y); for(i=0;i<6;i++) WriteDat(F6x8[c][i]); x += 6; j++; } }break; case 2: { while(ch[j] != '\0') { c = ch[j] - 32; if(x > 120) { x = 0; y++; } OLED_SetPos(x,y); for(i=0;i<8;i++) WriteDat(F8X16[c*16+i]); OLED_SetPos(x,y+1); for(i=0;i<8;i++) WriteDat(F8X16[c*16+i+8]); x += 8; j++; } }break; } } //-------------------------------------------------------------- // Prototype : void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N) // Calls : zhineng jiaju // Parameters : x,y -- 起始点坐标(x:0~127, y:0~7); N:汉字在codetab.h中的索引 // Description : 显示codetab.h中的汉字,16*16点阵 //-------------------------------------------------------------- void OLED_SMHOME(unsigned char x, unsigned char y, unsigned char N) { unsigned char wm=0; unsigned int adder=32*N; OLED_SetPos(x , y); for(wm = 0;wm < 16;wm++) { WriteDat(SMHOME[adder]); adder += 1; }